alerts: fix duplicate series in InfoInhibitor alert#2786
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simonpasquier merged 2 commits intoprometheus-operator:mainfrom Mar 10, 2026
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@simonpasquier pushed the suggestion |
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Had the same issue. Thanks for opening the PR 🥳 |
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@simonpasquier friendly ping. It would be really great to get this on the road 🚀 |
simonpasquier
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Feb 16, 2026
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@simonpasquier could we merge this ? |
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@simonpasquier thanks for approving the PR. Could this please be merged? |
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you need to rebase the branch |
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Sorry to write here again but this alert is failing for me from time to time. Any chance to get it merged now? 😅 |
simonpasquier
approved these changes
Mar 10, 2026
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Description
Fix the InfoInhibitor alert failing to evaluate with a "duplicate series" error in Prometheus.
When multiple info-level alerts fire in the same namespace, the current expression can produce multiple series with the same labelset after the
unless on(namespace)operation, causing Prometheus to fail evaluation.The fix uses
count by (namespace)to aggregate alerts, ensuring each side of theunlessoperator produces exactly one series per namespace.Fixes #2751
Related: prometheus-community/helm-charts#5873
Type of change
CHANGE(fix or feature that would cause existing functionality to not work as expected)FEATURE(non-breaking change which adds functionality)BUGFIX(non-breaking change which fixes an issue)ENHANCEMENT(non-breaking change which improves existing functionality)NONE(if none of the other choices apply. Example, tooling, build system, CI, docs, etc.)Changelog entry